Yamaha 115-225 HP Outboards Service Manual, Page 109Get this manual
IPOWRI _I
CLEANING AND INSPECTION
G625050
PISTON RING Inspection 1) Install piston rings to the piston and measure clearance between each ring and groove land using the feeler gaugeSide clearance: 0.020.06 mm (0.00080.0024 in) If any clearance is out of the specification, replace the pistonRemove the rings